. >>> thanks for joining us. i'm derek mcginty. >> and i'm anita brikman. >>> tonight shocking new details come out of an 18-year-old bizarre kidnapping case. >> california police have arrested a convicted sex offender and his wife for abducting little jc dugar back in 1991. but now we find out what happened after that is harder to stomach. she hadn't been seen or heard from in 18 long years. >> there are no known attempts for her to reach out to anybody. >> so when she accompanied the sex offender, his wife nancy and two children in his parole meeting, authorities got suspicious. during questioning, they discovered that jc, now 29 and called alyssa, was really the 11-year-old girl kidnapped back in 1991 near her home in south lake, tahoe. and it turns out, phillip had fathered the two children with jc. >> none of the children have ever gone to school. they've never been to a doctor. they were kept in complete isolation. >> the two girls are 15 and 11 which means jc go pregnant at age 13. authorities say the thre